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The region of the body inferior to the pelvic diaphragm and between the legs. With arousal, the vagina lengthens rapidly to an average of about 4 in. The Journal of Infectious Diseases. It should be noted that during orgasm, the uterus contracts, and some women experience painful contractions after orgasm; however, this does not lead to premature delivery. The muscular wall of the uterus is called the myometrium.
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The female reproductive system

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Overlapping reactivations of HSV-2 in the genital and perianal mucosa

Progesterone increases the number of peg cells, while estrogen increases their height and secretory activity. The results from this study support this dynamic model of viral reactivation, demonstrating the detection of multiple distinct areas of simultaneous HSV reactivation throughout the genital mucosa. Some studies show changes in the function of these nerves in more than half of women following vaginal delivery. They correspond to the bulbourethral glands of the male. During tumescence in the female, the introitus tightens by at least one-third due to venous congestion at the outer third of the vaginal barrel location of the corpus spongiosum in the female. The membrane undergoes little change during the menstrual cycle except in its content of glycogen , a complex starchlike carbohydrate ; this is in contradistinction to the situation in many mammals in which marked exfoliation shedding of the surface cells can occur. It can also be ruptured by childbirth, a pelvic examination, injury, or sports.
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Physiology of adult Homo sapiens - Reproductive apparatuses

Estrogen is responsible for the appearance of secondary sex characteristics of females at puberty and for the maturation and maintenance of the reproductive organs in their mature functional state. This tissue is not shed during menstruation, unlike the lining of the uterus. National Center for Biotechnology Information , U. This condition can affect both men and women where the pudendal nerve has been damaged, trapped or irritated. Ejaculation occurs contractions of the ejaculatory duct in the prostate gland cause semen to be ejected through the urethra and penis , and the urethra, anus, and muscles of pelvic floor contract 3 to 6 times at 0.
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The uterus is held in position within the pelvis by condensations of endopelvic fascia, which are called ligaments. For these reasons, it is probably best not to have a routine episiotomy at the time of delivery. For more information about vulval pain or vulvodynia, its treatment and management, visit: Vulvodynia can affect women of all ages and in otherwise healthy women. It also has a role in libido in women.
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